Bacterial cellulose: Application as drug delivery system

Abstract

Bacterial cellulose (BC) is a very interesting biopolymers to biomedical application, including drug delivery system, due to unique characteristics as such as high degree purity and of porosity, relative high permeability to liquid and gases, high holding water capacity, tensile strength and randomly oriented three-dimensional fiber network. Several authors described the use of BC membranes or copolymers to use as drug delivery system. The aim of the present mini-review was to show the wide and vantages application of the BC and its copolymers for use as controlled drug delivery system.

Effect of crosslinker and nanostructure on adsorption and release of paraquat herbicide from different natural hydrogel nanocomposites

“…Additionally, the presence of -OH groups in the chemical structure of both alginate and starch polysaccharides also favored the pesticide adsorption, as well as the hydrophobic interactions. 20,21 The sp 2 hybridization of the pyridinic ring becomes the structure with weakly polar characteristics whereas this hybridized form is more electronegative than sp 3 hybridization, also present in the pesticide structure. This factor also improved paraquat absorption.…”

“…In this sense, the polymeric materials have gained great space in the different technological sectors, because it is chemically inert and have in their structure highly reactive groups that allow the modification of their properties, increasing their application. [1][2][3] The use of polymers has revolutionized the market sectors by increasing agricultural productivity, food technology, medical treatments, aircraft performance and reducing fuel consumption through vehicles made of lighter materials. 4 Even with this revolution, these polymers are mostly derived from fossil sources (petroleum), so efforts are being made to replace by natural polymers.…”